Louis cadenel



L. CADENEL.

ELECTROMAGNETIC LOCKING DEVICE.

APPLICATION IILED IA`Y'21. |914. l 1,304,453. Patented My2o,'1919.

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LOUIS CADENEL, OF PARIS, FRANCE.

ELEG'1BOMAGNIEIJICl LOCKING DEVICE.

A Specification of Letters Patent.

PatentedMay 2o, 1919.

Application led May 27, 1914. Serial No. 841,337.

vTo all whom t may concern.'

Be it known that I', Louis CADENEL, a citizen of the French Republic,residing at Paris, in France, have invented certain new and usefulImprovements in Electromagnetic Locking Devices, of which the followingis a specification.

This invention relates to improvements in electric locking devices.

In the improved device the locking members, in the form of bolts, areactuated and displaced by means of an electromagnet of particularconstruction; the device l"can be combined with a switch providedwithsecret combination means so as to prevent unlocking of the deviceexcept by authorized persons.

The annexed drawings illustrate the invention.

Figure 1 is a section of a locking device applicable to motor cars.

Fig. 2 is a diagram illustrating the principle of the invention.

Fig. 3 is a side view of Fig. 2.

Fig. 4 is a plan view of Fig. 2.

Referring to Fig. 2. A-B indicates an electric coil wound around a tubed of nonmagnetic metal in the center of which is fixed a soft iron corec; if in each of the open ends of the tube d a slidable rod t1 t2 isintroduced and current is passed through the coil capable of producingin the soft iron core c of the coil a negative pole on the side A and apositive pole on the side B for example, the rods t1 and t2 and the softiron core 0 will all be magnetized and each will have its positive andnegative pole as idicated in the drawing.

It can be seen that by this arrangement the magnetized fixed core cincreases the action of the coil A-B on the slidable rods t1 t2, itsmagnetic power being additional to the action of the coil.

Such electromagnetic device can be applied in various ways to differentsystems of locking devices without changing the principle of theinvention.

The locking device for motor cars shown in Figs. 1 to 3 comprises acasing 1 which is fixed in a suitable manner to a member 2 of the frameof the car and in which a box 3 can be introduced, said box containing acoil 4, in the central open space 4a of which is a piece of soft iron4b, and movable bars 5 and 6 integral with respective arms 7 and 8articulated on pins 9 and 10 mounted in the box. These arms are curvedas shown in the drawing and their noses 7a vand 8a traverse openings o2in the lateral walls of the box 3 and can engage in notches 11 and 12suitably arranged on the wall of the casing 1.

l -A spring 13 connects the lower ends of thearms 7 `'and 8.

The bottom 14 of the box 3 is traversed by a rod 15 guided in a collar16 and providediwitharetracting spring; at the time "Y of locking thisrod moves into one of the recesses 18v of a disk19 fixed for exampley ona shaft 20 to prevent the said shaft from transmitting movement, that isto say, to prevent the starting of a motor car or any other machine.

The coil'4 is arranged in a suitable electric circuit comprising abattery and contact button and can be combined with a suite able switchhaving secret combinations and housed in the space S and operated by thebuttons B for example (Figs. 3 and 4).

In Fig. l the arms 7 and 8 and the bars 5 and 6 are shown in full linesin their locking position and in dotted lines in their unlockedposition.

The device diagrammatically illustrated in' Fig. 1, if cut through themiddle, would form two distinct coils which would each have at one end afixed soft iron core and at'the other end a movable bolt and which couldbe arranged in any desired position.

What I claim as'my invention and desire to secure by Letters Patentofthe United States is 1. In an electromagnetic locking device, thecombination of `a casing, a removable box adapted to be set within saidcasing, a coil located within said box and adapted to receive electriccurrent, a movable member or armature of magnetizable material arrangedadjacent to said coil to be within its attractive influence when thecoil is energized, a pivoted arm connected with said armature and havinga curved end adapted to pass lthrough a slot inthe wall of said box andto project into alrecess in the wall of said casing, a spring connectedwith said arm and tending to throw the armature away from the coil, arotary recessed disk located adjacent to said casing, and aspringpressed bolt carried by said box and adapted for lockingengagement with said disk at a recess thereof when the box is lockedwithin the casing by said pivoted arm.

2. In an electromagnetic locking device, a

project therefrom into locking engagement f With the casing, -said armsbeing retracted when the said device is energized, to.release the boXfrom the casing, a spring connected with both arms and Ytendin'gt'othrow them into the projecting or locking position, a disk mounted toturn, and aspring-pre'ssed bolt carried by said box locking engagementWith said disk when the boX is locked Within the casing by said arms.

3. In an electromagnetic locking device, a casing, a removable boxadapted to be set Within said casing, an electromagnetic actuatingdevice located in the box, two locking arms carried by said box movablyand and adapted for adapted Arto project therefrom atY opposite sidesinto locking engagement With the casing, said arms being spring-pressedto throwvv them vintof the locking position, and under the influence ofsaid device, when energized, to shift them to the releasing position,a'spring-pressed bolt carried by'said .boxi'at a pointequidistant fromsaid locking arms, and a disk mounted to turn and adapted forlockingengageinent With said. bolt When thefboX is locked' tothe casingby said arms.Vllv 1,; Y 'i In Witness -Whereof- I. have 4signed. thisspecification in ,the presence of two Witnesses.

LOUIS IGADENEL.: Witnesses:

SENTI'zoN ROY, j o

J. SALZMANN.

Copies of this patent may be obtained for ve cents each, by addressing.the Commissioner uf-latents,

Washington, ILGX

